21476643050407 has 8 divisors (see below), whose sum is σ = 21486159865856. Its totient is φ = 21467127508632.

The previous prime is 21476643050399. The next prime is 21476643050413. The reversal of 21476643050407 is 70405034667412.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21476643050407 - 2³ = 21476643050399 is a prime.

It is a super-2 number, since 2×21476643050407² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21476643050417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34240738 + ... + 34862320.

It is an arithmetic number, because the mean of its divisors is an integer number (2685769983232).

Almost surely, 2^{21476643050407} is an apocalyptic number.

21476643050407 is a deficient number, since it is larger than the sum of its proper divisors (9516815449).

21476643050407 is a wasteful number, since it uses less digits than its factorization.

21476643050407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636837.

The product of its (nonzero) digits is 3386880, while the sum is 49.

The spelling of 21476643050407 in words is "twenty-one trillion, four hundred seventy-six billion, six hundred forty-three million, fifty thousand, four hundred seven".